CN204572334U - The dual mixer-ejector of a kind of low speed wind power - Google Patents
The dual mixer-ejector of a kind of low speed wind power Download PDFInfo
- Publication number
- CN204572334U CN204572334U CN201420758789.2U CN201420758789U CN204572334U CN 204572334 U CN204572334 U CN 204572334U CN 201420758789 U CN201420758789 U CN 201420758789U CN 204572334 U CN204572334 U CN 204572334U
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- group
- lobe
- annular
- aerofoil profile
- air duct
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses the dual mixer-ejector of a kind of low speed wind power, the rotating shaft of wind turbine rotor blade is positioned at the center of main duct, inner side many lobes annular one end margin is by welding or be built-inly bolted to main duct rear aperture annular edge, the many lobe annulars in inner side are made up of several first group of evenly distributed lobes, first group of lobe is protruding and form first group of conduit outside the rear aperture of main duct, shrink aerofoil profile by-pass air duct and be positioned at many lobe annulars rear, inner side, the rear aperture circle diameter shrinking aerofoil profile by-pass air duct is less than front opening circle diameter, outside many lobe annulars one end margin is fixed on the rear aperture annular edge shrinking aerofoil profile by-pass air duct, the many lobe annulars in outside are made up of several second group of evenly distributed lobes, second group of lobe convexes to form second group of conduit outside the rear aperture of contraction aerofoil profile by-pass air duct.The beneficial effects of the utility model increase wind energy conversion system output power by secondary pumping action, improves the utilization ratio of wind energy.
Description
Technical field
The utility model belongs to wind-force application apparatus technical field, relates to the dual mixer-ejector of a kind of low speed wind power.
Background technique
Wind energy conversion system is a kind of is thermal source with the sun, take air as the heat energy utilization motor of working medium, to obtain wind energy by empty air propels blade, and converting thereof into the power plant of useful mechanical or electrical energy simultaneously, wind energy is paid much attention to by people as reproducible, free of contamination natural energy resources; But the pneumatic limiting efficiency (i.e. the shellfish hereby limit) changed is 59.3% in theory, the wind energy utilization of conventional wind machine work wind speed range is about 30-45%, low speed WECS is about 10-30%, wind energy conversion system is usually in idle running or sends few electric energy when low speed, in the Wind Power Utilization of wind level (3-4m/s), wind energy conversion system wind energy utilization current is both at home and abroad lower.
Model utility content
The purpose of this utility model is to provide a kind of low speed wind power dual mixer-ejector, solves the current existing wind power plant wind energy conversion system problem that wind energy utilization is low when wind-force low speed.
The technological scheme that the utility model adopts comprises wind turbine rotor blade, wind turbine rotor blade is arranged in main duct, the rotating shaft of wind turbine rotor blade is positioned at the center of main duct, wind turbine rotor blade can be rotated in main duct, inner side many lobes annular one end margin is by welding or be built-inly bolted to main duct rear aperture annular edge, the many lobe annulars in inner side are made up of several first group of evenly distributed lobes, first group of lobe is protruding outside the rear aperture of main duct, first group of conduit is formed between first group of lobe, shrink aerofoil profile by-pass air duct and be positioned at many lobe annulars rear, inner side, the front opening circle diameter shrinking aerofoil profile by-pass air duct is greater than the maximum diameter of inner side many lobes annular, the rear aperture circle diameter shrinking aerofoil profile by-pass air duct is less than front opening circle diameter, outside many lobe annulars one end margin is fixed on the rear aperture annular edge shrinking aerofoil profile by-pass air duct, the many lobe annulars in outside are made up of several second group of evenly distributed lobes, second group of lobe is protruding outside the rear aperture of contraction aerofoil profile by-pass air duct, second group of conduit is formed between second group of lobe.
Further, the quantity of described first group of lobe and second group of lobe is equal and corresponding before and after position.
Further, one end of described first group of lobe is connected to the rear portion annular edge of main duct, first group of lobe be half tubaeform, lug boss outside annulus, both sides roll, every two first group of lobe both sides of the edge are connected to form first group of conduit.
Further, described main duct is the cylindrical channel of front and rear part opening.
Further, described first group of lobe central cross-section molded line, first group of conduit central cross-section molded line are all smoothly connected transition with main duct axial cross section molded line is tangent; Described second group of conduit central cross-section molded line is smoothly connected transition with contraction aerofoil profile by-pass air duct axial cross section molded line is tangent; Described second group of lobe central cross-section molded line is smoothly connected transition by small arc-shaped and contraction aerofoil profile by-pass air duct axial cross section molded line.
Further, the axle center of described wind turbine rotor blade, main duct, contraction aerofoil profile by-pass air duct, the many lobe annulars in inner side, outside many lobes annular is all positioned on same axis.
Further, the edge that the opening section circumferencial direction of described first group of lobe and first group of conduit distributes axisymmetricly is several petal-shaped guide plates of layered laminate; The edge that the opening section circumferencial direction of described second group of lobe and second group of conduit distributes axisymmetricly is several petal-shaped guide plates of layered laminate.
Further, the many lobe annulars of the many lobes in described inner side annular and outside are increase tendency along the section area flowed to perpendicular to axle.
The beneficial effects of the utility model increase wind energy conversion system output power by secondary pumping action, improves the utilization ratio of wind energy.
Accompanying drawing explanation
Fig. 1 is the dual mixer-ejector front schematic view of a kind of low speed wind power of the utility model;
Fig. 2 is the dual mixer-ejector side schematic view of a kind of low speed wind power of the utility model;
Fig. 3 is the dual mixer-ejector schematic perspective view of a kind of low speed wind power of the utility model;
Fig. 4 is first group of lobe central cross-section molded line and main duct axial cross section molded line is tangent is smoothly connected transition schematic diagram;
Fig. 5 is first group of conduit central cross-section molded line and main duct axial cross section molded line is tangent is smoothly connected transition schematic diagram;
Fig. 6 is that second group of conduit central cross-section molded line is smoothly connected transition schematic diagram with contraction aerofoil profile by-pass air duct axial cross section molded line is tangent;
Fig. 7 is that second group of lobe central cross-section molded line is smoothly connected transition schematic diagram by small arc-shaped and contraction aerofoil profile by-pass air duct axial cross section molded line.
In figure, 1. wind turbine rotor blade, 2. main duct, 3. many lobe annulars inside, 4. first group of lobe, 5. first group of conduit, 6. shrink aerofoil profile by-pass air duct, many lobe annulars 7., 8. second group of lobe, 9. second group of conduit, 10. first group of lobe central cross-section molded line, 11. first groups of conduit central cross-section molded line, 12. main duct axial cross section molded line, 13. second groups of conduit central cross-section molded line, 14. shrink aerofoil profile by-pass air duct axial cross section molded line, 15. second groups of lobe central cross-section molded line.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
The utility model is a kind of dual mixer-ejector of low speed wind power contributing to two culvert type horizontal axis gentle breeze wind energy conversion system efficiency power generations of wind level.Structure as shown in Figure 1 to Figure 3, comprise wind turbine rotor blade 1, wind turbine rotor blade 1 is arranged in main duct 2, the rotating shaft of wind turbine rotor blade 1 is positioned at the center of main duct 2, wind turbine rotor blade 1 can be rotated in main duct 2, inner side many lobes annular 3 one end margins are by welding or be built-inly bolted to main duct 2 rear aperture annular edge, inner side many lobes annular 3 is made up of several first group of evenly distributed lobes 4, first group of lobe 4 is protruding outside the rear aperture of main duct 2, first group of conduit 5 is formed between first group of lobe 4, shrink aerofoil profile by-pass air duct 6 and be positioned at many lobe annulars 3 rears, inner side, the front opening circle diameter shrinking aerofoil profile by-pass air duct 6 is greater than the maximum diameter of inner side many lobes annular 3, the rear aperture circle diameter shrinking aerofoil profile by-pass air duct 6 is less than front opening circle diameter, outside many lobe annulars 7 one end margins are fixed on the rear aperture annular edge shrinking aerofoil profile by-pass air duct 6, outside many lobes annular 7 is made up of several second group of evenly distributed lobes 8, second group of lobe 8 is protruding outside the rear aperture of contraction aerofoil profile by-pass air duct 6, second group of conduit 9 is formed between second group of lobe 8.The quantity of first group of lobe 4 and second group of lobe 8 is equal and corresponding before and after position.One end of first group of lobe 4 is connected to the rear portion annular edge of main duct 2.One end of second group of lobe 8 is connected to the rear portion annular edge shrinking aerofoil profile by-pass air duct 6.Main duct 2 is the cylindrical channel of front and rear part opening.One end of first group of lobe 4 is connected to the rear portion annular edge of main duct 2, first group of lobe 4 in half tubaeform, lug boss outside annulus, both sides roll, every two first group lobe 4 both sides of the edge are connected to form first group of conduit 5.Second group of lobe 8 also can adopt this kind of shape with the connection shape of shrinking aerofoil profile by-pass air duct 6.
The axle center of wind turbine rotor blade 1, main duct 2, contraction aerofoil profile by-pass air duct 6, inner side many lobes annular 3, outside many lobes annular 7 is all positioned on same axis.Inner side many lobes annular 3 and outside many lobes annular 7 as a whole as two expansion structures, be positioned at the rear side of the rotor of low speed WECS, relatively and ground static, do not rotate.
As shown in Figure 4, Figure 5, first group of lobe central cross-section molded line, 10, first group of conduit central cross-section molded line 11 is all smoothly connected transition with main duct axial cross section molded line 12 is tangent.
As shown in Figure 6, Figure 7, second group of conduit central cross-section molded line 13 is smoothly connected transition with contraction aerofoil profile by-pass air duct axial cross section molded line 14 is tangent.Second group of lobe central cross-section molded line 15 is smoothly connected transition by small arc-shaped and contraction aerofoil profile by-pass air duct axial cross section molded line 14;
Utility model works principle is as follows:
This wind energy conversion system operationally, the air-flow passed through from main duct 2 is through wind turbine rotor blade 1, promote blade rotary, the air-flow entered from contraction aerofoil profile by-pass air duct 6 carries out blending with the air-flow of main duct 2 after rotor blade, improve weary pneumatic energy, make it acceleration and leave rotor rear portion, form degree of vacuum, produce pumping action and increase wind energy conversion system output power, make to which create the flow direction and exhibition that along the circumferential direction distribute axisymmetricly to vortex by the many lobe in the inner side of inner side annular 3 expansion structures, take away the low velocity fluid in blade downstream, reduce the pressure of downstream area, thus the pressure difference before and after increase rotor blade, improve the air-flow enthalpy drop by wind energy conversion system, improve wind energy utilization.Afterwards, shrink high-speed gas outside aerofoil profile by-pass air duct 6 and again create the flow direction and exhibition that along the circumferential direction distribute axisymmetricly to vortex by outside many lobe annulars 7 expansion structures at rear side, Momentum Transfer is given inside and outside duct first time mixed gas, it is made to accelerate to leave, increase provided with internal duct and external duct gas flow, secondary pumping action further increases the flow of wind energy conversion system provided with internal duct and external duct, increases wind energy conversion system output power, improves the wind energy utilization to wind level.Contraction aerofoil profile by-pass air duct 6 outside wind energy conversion system increases gas pressure, and the gas making pressure raise is in its throat, namely spray after first group of lobe 4, increase blending provided with internal duct and external duct gas mixing effect, simultaneously, its aerofoil profile aerodynamic loss is little, inflated with low pressure district is at contraction aerofoil profile by-pass air duct 6 outer side gas, gas accelerates through and shrinks outside aerofoil profile by-pass air duct 6, expand along second group of conduit 9 afterwards and accelerate, again blending is there is with the mixed gas of provided with internal duct and external duct after the many lobes in outside annular 7 structures, enhance secondary mixing effect, secondary pumping action improves provided with internal duct and external duct gas flow, and then improve the overall wind energy utilization of gentle breeze wind energy conversion system.
The above is only to better embodiment of the present utility model, not any pro forma restriction is done to the utility model, every any simple modification above mode of execution done according to technical spirit of the present utility model, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (8)
1. the dual mixer-ejector of low speed wind power, it is characterized in that: comprise wind turbine rotor blade (1), wind turbine rotor blade (1) is arranged in main duct (2), the rotating shaft of wind turbine rotor blade (1) is positioned at the center of main duct (2), wind turbine rotor blade (1) can be rotated in main duct (2), inner side many lobes annulars (3) end margin is by welding or be built-inly bolted to main duct (2) rear aperture annular edge, inner side many lobes annular (3) is made up of several first group of evenly distributed lobes (4), first group of lobe (4) is protruding outside the rear aperture of main duct (2), first group of conduit (5) is formed between first group of lobe (4), shrink aerofoil profile by-pass air duct (6) and be positioned at many lobes annular (3) rear, inner side, the front opening circle diameter shrinking aerofoil profile by-pass air duct (6) is greater than the maximum diameter of inner side many lobes annular (3), the rear aperture circle diameter shrinking aerofoil profile by-pass air duct (6) is less than front opening circle diameter, outside many lobes annular (7) end margin is fixed on the rear aperture annular edge shrinking aerofoil profile by-pass air duct (6), outside many lobes annular (7) is made up of several second group of evenly distributed lobes (8), second group of lobe (8) is protruding outside the rear aperture of contraction aerofoil profile by-pass air duct (6), second group of conduit (9) is formed between second group of lobe (8).
2. according to the dual mixer-ejector of low speed wind power a kind of described in claim 1, it is characterized in that: the quantity of described first group of lobe (4) and second group of lobe (8) is equal and corresponding before and after position.
3. according to the dual mixer-ejector of low speed wind power a kind of described in claim 1, it is characterized in that: one end of described first group of lobe (4) is connected to the rear portion annular edge of main duct (2), first group of lobe (4) in half tubaeform, lug boss outside annulus, both sides roll, every two first group lobe (4) both sides of the edge are connected to form first group of conduit (5).
4. according to the dual mixer-ejector of low speed wind power a kind of described in claim 1, it is characterized in that: the cylindrical channel that described main duct (2) is front and rear part opening.
5. according to the dual mixer-ejector of low speed wind power a kind of described in claim 1, it is characterized in that: described first group of lobe central cross-section molded line (10), first group of conduit central cross-section molded line (11) are all smoothly connected transition with main duct axial cross section molded line (12) is tangent; Described second group of conduit central cross-section molded line (13) is smoothly connected transition with contraction aerofoil profile by-pass air duct axial cross section molded line (14) is tangent; Described second group of lobe central cross-section molded line (15) is smoothly connected transition by small arc-shaped and contraction aerofoil profile by-pass air duct axial cross section molded line (14).
6. according to the dual mixer-ejector of low speed wind power a kind of described in claim 1, it is characterized in that: the axle center in described wind turbine rotor blade (1), main duct (2), contraction aerofoil profile by-pass air duct (6), inner side many lobes annular (3), outside many lobes annular (7) is all positioned on same axis.
7. according to the dual mixer-ejector of low speed wind power a kind of described in claim 1, it is characterized in that: the edge that the opening section circumferencial direction of described first group of lobe (4) and first group of conduit (5) distributes axisymmetricly is several petal-shaped guide plates of layered laminate; The edge that the opening section circumferencial direction of described second group of lobe (8) and second group of conduit (9) distributes axisymmetricly is several petal-shaped guide plates of layered laminate.
8. according to the dual mixer-ejector of low speed wind power a kind of described in claim 1, it is characterized in that: described inner side many lobes annular (3) and outside many lobes annular (7) are increase tendency along the section area flowed to perpendicular to axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420758789.2U CN204572334U (en) | 2014-12-04 | 2014-12-04 | The dual mixer-ejector of a kind of low speed wind power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420758789.2U CN204572334U (en) | 2014-12-04 | 2014-12-04 | The dual mixer-ejector of a kind of low speed wind power |
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| Publication Number | Publication Date |
|---|---|
| CN204572334U true CN204572334U (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420758789.2U Expired - Fee Related CN204572334U (en) | 2014-12-04 | 2014-12-04 | The dual mixer-ejector of a kind of low speed wind power |
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| Country | Link |
|---|---|
| CN (1) | CN204572334U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454331A (en) * | 2014-12-04 | 2015-03-25 | 哈尔滨工业大学 | Low-speed wind double ejector mixer |
| CN107010188A (en) * | 2017-05-11 | 2017-08-04 | 深圳潜水侠创新动力科技有限公司 | Underwater robot and underwater information acquisition system |
-
2014
- 2014-12-04 CN CN201420758789.2U patent/CN204572334U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454331A (en) * | 2014-12-04 | 2015-03-25 | 哈尔滨工业大学 | Low-speed wind double ejector mixer |
| CN107010188A (en) * | 2017-05-11 | 2017-08-04 | 深圳潜水侠创新动力科技有限公司 | Underwater robot and underwater information acquisition system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20151204 |
|
| EXPY | Termination of patent right or utility model |